Despite its internationally noted success, the Biogas Support Program (BSP) has always been relying on one type of plant design, the GGC 2047-Model. This plants design has ever since been changed only slightly despite the simple technical improvement opportunities identified in the 20 years of the BSP. In parallel the last two decades have seen the concentration of biogas installations on areas easily reachable to farmers that could afford the investment. In the Terai lowlands already 22% of the potential households have their own biogas plant, whereas this share reaches so far only to 2.5 % in remote Hill districts. Furthermore in Urban Areas the potential for biogas applications remains entirely untapped, even though the recurrent fuel crisis and health hazards related to organic waste rewards biogas applications with numerous benefits here. 
Changes in the used biogas plant designs are therefore necessary to expand the provision of biogas systems to these areas in order to continue the Nepali biogas success story.
Looking beyond the GGC 2047 model - NIBP-Model
In an unprecedented effort several international biogas experts have conducted a comprehensive audit of 117 biogas households, to obtain a better understanding of how their biogas plant had changed their life and to gather data on the long term performance of the installed plants check.
Several recommendations were elaborated to further enhance the BSP by making slight modifications to the GGC 2047 plant, giving it higher failure resistance, higher performance as well as a longer lifespan.  >more

Tapping the urban market – the ARTI plant
Developed by the Appropriate Rural Technology Institute (ARTI) in India, the small-scale biogas plant accepts kitchen waste as feedstock and fits into urban lifestyle. The biogas can be used for cooking, and the solid residue is excellent organic compost. Since 2003 about 1,000 small biogas plants have been so far installed in India in the Federal State of Maharashtra. Depending on the respective input amounts a single plant produces sufficient biogas to at least halve the use of LPG or kerosene for cooking in a household or even to substitute it entirely.

Reaching remote areas - the Bag Digester

When trying to reach high areas a sack of cement on the back is a considerate burden, therefore less heavy materials are necessary to provide biogas also in more remote regions. In China, several hundred Bag-Digesters have been installed throughout the country so far. They are particularly designed for rural residents and small farm owners in remote areas. The bag-digester is made of strong PVC under strict industrial standard regarding quality control (capacity of 6m3 to 15m3, UV-proof). One bag-digester incl. pipes, stove and fittings weights about 40-50kg. In comparison to the heavier GGC 2047 model the costs of transport per biogas plant installation therefore shrink considerably in remote areas. >more

More R&D:
Rehabilitation and improving the efficancy of older biogas plant in the PREIP-Project (see the experiences of the pilot programm) >more